From c658ad1b4e1520511da8323aa5e60d444cc303ed Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 11 Dec 2009 00:44:47 -0800 Subject: sparc64: Add syscall tracepoint support. Signed-off-by: David S. Miller --- arch/sparc/Kconfig | 1 + arch/sparc/include/asm/thread_info_64.h | 2 ++ arch/sparc/include/asm/unistd.h | 2 +- arch/sparc/kernel/entry.S | 2 +- arch/sparc/kernel/ftrace.c | 11 +++++++++++ arch/sparc/kernel/ptrace_64.c | 10 ++++++++++ arch/sparc/kernel/syscalls.S | 14 +++++++------- 7 files changed, 33 insertions(+), 9 deletions(-) (limited to 'arch') diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 33ac1a9ac88..108197ac0d5 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -43,6 +43,7 @@ config SPARC64 select HAVE_SYSCALL_WRAPPERS select HAVE_DYNAMIC_FTRACE select HAVE_FTRACE_MCOUNT_RECORD + select HAVE_SYSCALL_TRACEPOINTS select USE_GENERIC_SMP_HELPERS if SMP select RTC_DRV_CMOS select RTC_DRV_BQ4802 diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h index 1b45a7bbe40..7257ebb8f39 100644 --- a/arch/sparc/include/asm/thread_info_64.h +++ b/arch/sparc/include/asm/thread_info_64.h @@ -227,6 +227,7 @@ register struct thread_info *current_thread_info_reg asm("g6"); /* flag bit 8 is available */ #define TIF_SECCOMP 9 /* secure computing */ #define TIF_SYSCALL_AUDIT 10 /* syscall auditing active */ +#define TIF_SYSCALL_TRACEPOINT 11 /* syscall tracepoint instrumentation */ /* flag bit 11 is available */ /* NOTE: Thread flags >= 12 should be ones we have no interest * in using in assembly, else we can't use the mask as @@ -246,6 +247,7 @@ register struct thread_info *current_thread_info_reg asm("g6"); #define _TIF_32BIT (1< #include #include +#include #include @@ -91,3 +92,13 @@ int __init ftrace_dyn_arch_init(void *data) } #endif +#ifdef CONFIG_FTRACE_SYSCALLS + +extern unsigned int sys_call_table[]; + +unsigned long __init arch_syscall_addr(int nr) +{ + return (unsigned long)sys_call_table[nr]; +} + +#endif diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c index 4ae91dc2feb..2f6524d1a81 100644 --- a/arch/sparc/kernel/ptrace_64.c +++ b/arch/sparc/kernel/ptrace_64.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include @@ -37,6 +38,9 @@ #include #include +#define CREATE_TRACE_POINTS +#include + #include "entry.h" /* #define ALLOW_INIT_TRACING */ @@ -1059,6 +1063,9 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs) if (test_thread_flag(TIF_SYSCALL_TRACE)) ret = tracehook_report_syscall_entry(regs); + if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) + trace_sys_enter(regs, regs->u_regs[UREG_G1]); + if (unlikely(current->audit_context) && !ret) audit_syscall_entry((test_thread_flag(TIF_32BIT) ? AUDIT_ARCH_SPARC : @@ -1084,6 +1091,9 @@ asmlinkage void syscall_trace_leave(struct pt_regs *regs) audit_syscall_exit(result, regs->u_regs[UREG_I0]); } + if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) + trace_sys_exit(regs, regs->u_regs[UREG_G1]); + if (test_thread_flag(TIF_SYSCALL_TRACE)) tracehook_report_syscall_exit(regs, 0); } diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S index d150c2aa98d..dc4a458f74d 100644 --- a/arch/sparc/kernel/syscalls.S +++ b/arch/sparc/kernel/syscalls.S @@ -62,7 +62,7 @@ sys32_rt_sigreturn: #endif .align 32 1: ldx [%g6 + TI_FLAGS], %l5 - andcc %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0 + andcc %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0 be,pt %icc, rtrap nop call syscall_trace_leave @@ -187,7 +187,7 @@ linux_syscall_trace: .globl linux_sparc_syscall32 linux_sparc_syscall32: /* Direct access to user regs, much faster. */ - cmp %g1, NR_SYSCALLS ! IEU1 Group + cmp %g1, NR_syscalls ! IEU1 Group bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI srl %i0, 0, %o0 ! IEU0 sll %g1, 2, %l4 ! IEU0 Group @@ -198,7 +198,7 @@ linux_sparc_syscall32: srl %i5, 0, %o5 ! IEU1 srl %i2, 0, %o2 ! IEU0 Group - andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0 + andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0 bne,pn %icc, linux_syscall_trace32 ! CTI mov %i0, %l5 ! IEU1 call %l7 ! CTI Group brk forced @@ -210,7 +210,7 @@ linux_sparc_syscall32: .globl linux_sparc_syscall linux_sparc_syscall: /* Direct access to user regs, much faster. */ - cmp %g1, NR_SYSCALLS ! IEU1 Group + cmp %g1, NR_syscalls ! IEU1 Group bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI mov %i0, %o0 ! IEU0 sll %g1, 2, %l4 ! IEU0 Group @@ -221,7 +221,7 @@ linux_sparc_syscall: mov %i3, %o3 ! IEU1 mov %i4, %o4 ! IEU0 Group - andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0 + andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0 bne,pn %icc, linux_syscall_trace ! CTI Group mov %i0, %l5 ! IEU0 2: call %l7 ! CTI Group brk forced @@ -245,7 +245,7 @@ ret_sys_call: cmp %o0, -ERESTART_RESTARTBLOCK bgeu,pn %xcc, 1f - andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6 + andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %l6 80: /* System call success, clear Carry condition code. */ andn %g3, %g2, %g3 @@ -260,7 +260,7 @@ ret_sys_call: /* System call failure, set Carry condition code. * Also, get abs(errno) to return to the process. */ - andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6 + andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %l6 sub %g0, %o0, %o0 or %g3, %g2, %g3 stx %o0, [%sp + PTREGS_OFF + PT_V9_I0] -- cgit v1.2.3-70-g09d2